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1 /
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2 / Copyright (C) Igor Sysoev
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3 / Copyright (C) Nginx, Inc.
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4 /
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5
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6
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7 / "casa [%o2] 0x80, %o1, %o0" and
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8 / "casxa [%o2] 0x80, %o1, %o0" do the following:
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9 /
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10 / if ([%o2] == %o1) {
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11 / swap(%o0, [%o2]);
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12 / } else {
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13 / %o0 = [%o2];
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14 / }
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15
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16
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17 / ngx_atomic_uint_t ngx_casa(ngx_atomic_uint_t set, ngx_atomic_uint_t old,
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18 / ngx_atomic_t *lock);
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19 /
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20 / the arguments are passed in the %o0, %o1, %o2
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21 / the result is returned in the %o0
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22
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23 .inline ngx_casa,0
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24 casa [%o2] 0x80, %o1, %o0
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25 .end
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26
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27
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28 / ngx_atomic_uint_t ngx_casxa(ngx_atomic_uint_t set, ngx_atomic_uint_t old,
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29 / ngx_atomic_t *lock);
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30 /
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31 / the arguments are passed in the %o0, %o1, %o2
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32 / the result is returned in the %o0
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33
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34 .inline ngx_casxa,0
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35 casxa [%o2] 0x80, %o1, %o0
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36 .end
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